#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<math.h>

typedef struct avltree
{
  
}*AVLTree;

int main() 
{ 

#ifdef FILEIO
  freopen("in.txt","r",stdin); 
  freopen("out.txt","w",stdout); 
#endif



#ifdef FILEIO
  fclose(stdin);
  fclose(stdout);
#endif
  
  return 0; 
} 
